#include "../logs/log.h"
#include <unistd.h>
enum class TimeGap
{
    GAP_SECONND,
    GAP_MINUTE,
    GAP_HOUR,
    GAP_DAY,
};
class RollByTimeSink : public bitlog::LogSink
{
public:
    // 构造时候传入文件名 并打开文件 将操作句柄管理起来
    RollByTimeSink(const std::string &basename, TimeGap gap_type)
        : _basename(basename)
    {
        switch (gap_type)
        {
        case TimeGap::GAP_SECONND:
            _gap_size = 1;
            break;
        case TimeGap::GAP_MINUTE:
            _gap_size = 60;
            break;
        case TimeGap::GAP_HOUR:
            _gap_size = 3600;
            break;
        case TimeGap::GAP_DAY:
            _gap_size = 3600 * 24;
            break;
        }
        _cur_gap = _gap_size == 1 ? bitlog::util::Date::now() : bitlog::util::Date::now() % _gap_size; // 获取当前是第几个时间段
        std::string filename = createNewFile();
        bitlog::util::File::createDirectory(bitlog::util::File::path(filename));
        _ofs.open(filename,std::ios::binary | std::ios::app);
        assert(_ofs.is_open());
    }
    // 将日志消息写入到标准输出 判断当前时间是否是当前文件的时间段 不是则切换文件
    void log(const char *data, size_t len)
    {
        time_t cur = bitlog::util::Date::now();
        if(cur % _gap_size != _cur_gap)
        {
            // 记得关闭原来的文件
            _ofs.close();
            std::string filename = createNewFile();
            _ofs.open(filename,std::ios::binary | std::ios::app);
             assert(_ofs.is_open());
        }
        _ofs.write(data, len);
        assert(_ofs.good());
    }
private:
    std::string createNewFile()
    {
        // 获取系统时间 以时间来构造文件扩展名
            time_t t = bitlog::util::Date::now();
            struct tm lt;
            localtime_r(&t, &lt);
            std::stringstream filename;
            filename << _basename;
            filename << lt.tm_year + 1900;
            filename << lt.tm_mon + 1;
            filename << lt.tm_mday;
            filename << lt.tm_min;
            filename << lt.tm_sec;
            filename << ".log";
            return filename.str();
    }
private:
    std::string _basename;
    std::ofstream _ofs;
    size_t _cur_gap;  // 当前是第几个时间段
    size_t _gap_size; // 时间段的大小
};


int main()
{
    std::unique_ptr<bitlog::LoggerBuilder> builder(new bitlog::GlobalLoggerBuilder());
    builder->buildLoggerLevel(bitlog::LogLevel::value::WARN);
    builder->buildLoggerName("async_logger");
    builder->buildFormatter("[%c][%f:%l]%m%n");
    builder->buildLoggerType(bitlog::LoggerType::LOGGER_ASYNC);
    builder->buildSink<RollByTimeSink>("./logfile/roll-async-by-size.log",TimeGap::GAP_SECONND);
    bitlog::Logger::ptr logger =  builder->build();
    size_t cur = bitlog::util::Date::now();
    while(bitlog::util::Date::now() < cur + 5)
    {
        logger->fatal("这是一条测试日志");
        usleep(1000);
    }
 
    return 0;
}